package com.zhuoyue.researchManement.util;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;

public class IpUtils
{
	public static String getIpAddr(HttpServletRequest request)
	{
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getRemoteAddr();
			if (ip.equals("127.0.0.1"))
			{
				// 根据网卡取本机配置的IP
				InetAddress inet = null;
				try
				{
					inet = InetAddress.getLocalHost();
				} catch (Exception e)
				{
					e.printStackTrace();
				}
				ip = inet.getHostAddress();
			}
		}
		// 多个代理的情况，第一个IP为客户端真实IP，多个IP按照','分割
		if (ip != null && ip.length() > 15)
		{
			if (ip.indexOf(",") > 0)
			{
				ip = ip.substring(0, ip.indexOf(","));
			}
		}
		return ip;
	}
}
